Separator of special material for paper stock treating engines



June 13, 1939. LE R BOLTON 2,161,848

SEPARATOR OF SPECIAL MATERIAL FOR PAPER STOCK TREATING ENGINES Filed Aug. 6, 1935 aw; MW

ATTORNEY.

Patented June 13, 1939 PATENT OFFICE SEPARATOR OF SPECIAL MATERIAL FOR PAPER, STOCK TREATING ENGINES Archer Le Roy Bolton, North Andover, Mass, assignor to John W. Bolton & Sons, 1110., Lawrence, Mass., a corporation of Massachusetts Application August 6,

8 Claims.

This invention relates to paper stock treating machines or engines used in beating and refining paper stock of the type known generally as beaters and Jordans.

As now generally made, beater engines include a roll, from the surface of which project metal bars in line with the axis, these bars being generally separated and supported by wooden filler pieces.

Jordan engines comprise a truncated conical shell, inwardly from which project bent metal knives between which are separating members which are generally of wood, although separators of metal and cement have been used, and a truncated conical plug which revolves inside the shell, from the surface of which project bars between which are separating members which are generally of wood, but which, in some cases, have been made of metal and cement.

Sometimes the metal bars or knives, and the separators, are assembled in or on the machine or engine, and sometimes they are assembled either in a complete circle or a segment outside the engine, and the whole assembly attached or detached at will.

Jordan shell linings have also been made of all metal castings and for some kinds of stock, the great strength of these is desirable. In other cases, rigid cement or metal separators between the knives or bars have been found desirable.

However, in the majority of engines, wood is still used because it has some elasticity but not too much, and it has the quality of swelling when wet, thereby filling evenly the spaces between the knives or bars and holding them firmly but resiliently in place.

However, wooden separators are troublesome to make, the natural grain in the wood makes them uneven in strength and makes them swell unevenly, and they are attacked by the chemicals, often used in paper stock, and are also worn down by the passage and sluicing of the paper stock along and across them.

I have discovered that by using certain'artificial materials which have no natural grain but which are or can be made of uniform consistency throughout, a separator can be produced which can be picked up and carried around, or be put in place in a preassembled assembly or an assembly on the engine itself. Such a separator should be made of a material which has some elasticity and which will swell a certain amount when in contact with water.

In the drawing, I show in Fig. 1 an isometric View of a typical separator for a Jordan shell;

1935, Serial No. 34,922

in Fig. 2, a typical separator for a Jordan plug;

and in Fig. 3, a typical separator for a beater roll.

I have found that a very satisfactory material is what is known as Formica, which is made of a cellulosic material, compressed when it is relatively dry to an extent whereby it retains its shape when pressure is removed. Such a material can be impregnated with any material which is acid resistant but which does not prevent it from swelling when wet.

Another material is what is known as Bakelite, which is formed of paper or textile or textile fibers incorporated with a certain form of resin and heat treated. Preferably, the combination should be such that the finished separator will swell when wet.

I intend to include in my invention, however, any bodily transportable, preconstructed separator made up substantially of organic materials, with no natural grain.

I claim:

1. As an article of manufacture, a bodily transportable separator for paper stock treating engines of the beater and Jordan type, which is made of an artificial material which has no natural grain, but which has some elasticity and which will swell when in contact with water without becoming soft.

2. A bodily transportable separator for paper stock treating engines made of c'ellulosic material compressed when relatively dry to an extent whereby it retains its shape when pressure is removed and impregnated with a material which does not prevent it from swelling when wet without becoming soft.

3. A bodily transportable pre-compressed separator for paper stock treating engines made of substantially c'ellulosic material which has no natural grain and which swells when wet without becoming soft.

4. As an article of manufacture, a bodily transportable separator for paper stock treating en.- gines containing a combination of waterproof material with a material which swells when Wet in such proportions that it will swell a predetermined amount when wet without becoming soft.

5. A bodily transportable separator for paper stock treating engines composed substantially of organic material without natural grain which will swell somewhat when wet without becoming soft. 50

6. A bodily transportable separator for Jordan engines of keystone cross-section and tapering lengthwise made of a cellulosic material which has no natural grain and is impregnated with a resin and which is compressed and heat-treated, 55

a and which will swell somewhat when 'wet without 7 becoming soft. 1 r

;'7. The combination with the curved surface of a Jordan enginef of two metal blades radially attached thereto; and a separator between the two blades of keystone'cross section and tapering lengthwise, composed substantially of organic material without natural grain which will swell somewhat when wet without becoming soft.

8. The combination with the curved surface of a paper stock treating member; of two metal blades radially attached thereto; and a separator between the two blades, made of substantially cellulosic material which has no natural grain 5 and which swells when wet without becoming soft. V V

" ARCHER. LE ROY BOLTON. 

